1 /***************************************************************************
2 * Copyright (C) 2015 by David Ung *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 ***************************************************************************/
23 #include <helper/replacements.h>
26 #include "arm_disassembler.h"
29 #include <helper/binarybuffer.h>
30 #include <helper/command.h>
36 #include "armv8_opcodes.h"
38 #include "target_type.h"
40 #define __unused __attribute__((unused))
42 static const char * const armv8_state_strings[] = {
43 "AArch32", "Thumb", "Jazelle", "ThumbEE", "AArch64",
49 /* For user and system modes, these list indices for all registers.
50 * otherwise they're just indices for the shadow registers and SPSR.
52 unsigned short n_indices;
53 const uint8_t *indices;
54 } armv8_mode_data[] = {
55 /* These special modes are currently only supported
56 * by ARMv6M and ARMv7M profiles */
103 .psr = ARMV8_64_EL3T,
107 .psr = ARMV8_64_EL3H,
111 /** Map PSR mode bits to the name of an ARM processor operating mode. */
112 const char *armv8_mode_name(unsigned psr_mode)
114 for (unsigned i = 0; i < ARRAY_SIZE(armv8_mode_data); i++) {
115 if (armv8_mode_data[i].psr == psr_mode)
116 return armv8_mode_data[i].name;
118 LOG_ERROR("unrecognized psr mode: %#02x", psr_mode);
119 return "UNRECOGNIZED";
122 int armv8_mode_to_number(enum arm_mode mode)
126 /* map MODE_ANY to user mode */
159 LOG_ERROR("invalid mode value encountered %d", mode);
165 static int armv8_read_core_reg(struct target *target, struct reg *r,
166 int num, enum arm_mode mode)
170 struct arm_reg *armv8_core_reg;
171 struct armv8_common *armv8 = target_to_armv8(target);
173 assert(num < (int)armv8->arm.core_cache->num_regs);
175 armv8_core_reg = armv8->arm.core_cache->reg_list[num].arch_info;
176 retval = armv8->load_core_reg_u64(target,
177 armv8_core_reg->num, ®_value);
179 buf_set_u64(armv8->arm.core_cache->reg_list[num].value, 0, 64, reg_value);
180 armv8->arm.core_cache->reg_list[num].valid = 1;
181 armv8->arm.core_cache->reg_list[num].dirty = 0;
187 static int armv8_write_core_reg(struct target *target, struct reg *r,
188 int num, enum arm_mode mode, target_addr_t value)
191 struct arm_reg *armv8_core_reg;
192 struct armv8_common *armv8 = target_to_armv8(target);
194 assert(num < (int)armv8->arm.core_cache->num_regs);
196 armv8_core_reg = armv8->arm.core_cache->reg_list[num].arch_info;
197 retval = armv8->store_core_reg_u64(target,
200 if (retval != ERROR_OK) {
201 LOG_ERROR("JTAG failure");
202 armv8->arm.core_cache->reg_list[num].dirty = armv8->arm.core_cache->reg_list[num].valid;
203 return ERROR_JTAG_DEVICE_ERROR;
206 LOG_DEBUG("write core reg %i value 0x%" PRIx64 "", num, value);
207 armv8->arm.core_cache->reg_list[num].valid = 1;
208 armv8->arm.core_cache->reg_list[num].dirty = 0;
214 /* retrieve core id cluster id */
215 int armv8_read_mpidr(struct armv8_common *armv8)
217 int retval = ERROR_FAIL;
218 struct arm_dpm *dpm = armv8->arm.dpm;
221 retval = dpm->prepare(dpm);
222 if (retval != ERROR_OK)
225 retval = dpm->instr_read_data_r0(dpm, armv8_opcode(armv8, READ_REG_MPIDR), &mpidr);
226 if (retval != ERROR_OK)
229 armv8->multi_processor_system = (mpidr >> 30) & 1;
230 armv8->cluster_id = (mpidr >> 8) & 0xf;
231 armv8->cpu_id = mpidr & 0x3;
232 LOG_INFO("%s cluster %x core %x %s", target_name(armv8->arm.target),
235 armv8->multi_processor_system == 0 ? "multi core" : "mono core");
238 LOG_ERROR("mpdir not in multiprocessor format");
246 * Configures host-side ARM records to reflect the specified CPSR.
247 * Later, code can use arm_reg_current() to map register numbers
248 * according to how they are exposed by this mode.
250 void armv8_set_cpsr(struct arm *arm, uint32_t cpsr)
252 uint32_t mode = cpsr & 0x1F;
254 /* NOTE: this may be called very early, before the register
255 * cache is set up. We can't defend against many errors, in
256 * particular against CPSRs that aren't valid *here* ...
259 buf_set_u32(arm->cpsr->value, 0, 32, cpsr);
260 arm->cpsr->valid = 1;
261 arm->cpsr->dirty = 0;
264 /* Older ARMs won't have the J bit */
265 enum arm_state state = 0xFF;
267 if (((cpsr & 0x10) >> 4) == 0) {
268 state = ARM_STATE_AARCH64;
270 if (cpsr & (1 << 5)) { /* T */
271 if (cpsr & (1 << 24)) { /* J */
272 LOG_WARNING("ThumbEE -- incomplete support");
273 state = ARM_STATE_THUMB_EE;
275 state = ARM_STATE_THUMB;
277 if (cpsr & (1 << 24)) { /* J */
278 LOG_ERROR("Jazelle state handling is BROKEN!");
279 state = ARM_STATE_JAZELLE;
281 state = ARM_STATE_ARM;
284 arm->core_state = state;
285 if (arm->core_state == ARM_STATE_AARCH64)
286 arm->core_mode = (mode << 4) | 0xf;
288 arm->core_mode = mode;
290 LOG_DEBUG("set CPSR %#8.8x: %s mode, %s state", (unsigned) cpsr,
291 armv8_mode_name(arm->core_mode),
292 armv8_state_strings[arm->core_state]);
295 static void armv8_show_fault_registers32(struct armv8_common *armv8)
297 uint32_t dfsr, ifsr, dfar, ifar;
298 struct arm_dpm *dpm = armv8->arm.dpm;
301 retval = dpm->prepare(dpm);
302 if (retval != ERROR_OK)
305 /* ARMV4_5_MRC(cpnum, op1, r0, CRn, CRm, op2) */
307 /* c5/c0 - {data, instruction} fault status registers */
308 retval = dpm->instr_read_data_r0(dpm,
309 T32_FMTITR(ARMV4_5_MRC(15, 0, 0, 5, 0, 0)),
311 if (retval != ERROR_OK)
314 retval = dpm->instr_read_data_r0(dpm,
315 T32_FMTITR(ARMV4_5_MRC(15, 0, 0, 5, 0, 1)),
317 if (retval != ERROR_OK)
320 /* c6/c0 - {data, instruction} fault address registers */
321 retval = dpm->instr_read_data_r0(dpm,
322 T32_FMTITR(ARMV4_5_MRC(15, 0, 0, 6, 0, 0)),
324 if (retval != ERROR_OK)
327 retval = dpm->instr_read_data_r0(dpm,
328 T32_FMTITR(ARMV4_5_MRC(15, 0, 0, 6, 0, 2)),
330 if (retval != ERROR_OK)
333 LOG_USER("Data fault registers DFSR: %8.8" PRIx32
334 ", DFAR: %8.8" PRIx32, dfsr, dfar);
335 LOG_USER("Instruction fault registers IFSR: %8.8" PRIx32
336 ", IFAR: %8.8" PRIx32, ifsr, ifar);
339 /* (void) */ dpm->finish(dpm);
342 static void armv8_show_fault_registers(struct target *target)
344 struct armv8_common *armv8 = target_to_armv8(target);
346 if (armv8->arm.core_state != ARM_STATE_AARCH64)
347 armv8_show_fault_registers32(armv8);
350 static uint8_t armv8_pa_size(uint32_t ps)
373 LOG_INFO("Unknow physicall address size");
379 static __unused int armv8_read_ttbcr32(struct target *target)
381 struct armv8_common *armv8 = target_to_armv8(target);
382 struct arm_dpm *dpm = armv8->arm.dpm;
383 uint32_t ttbcr, ttbcr_n;
384 int retval = dpm->prepare(dpm);
385 if (retval != ERROR_OK)
387 /* MRC p15,0,<Rt>,c2,c0,2 ; Read CP15 Translation Table Base Control Register*/
388 retval = dpm->instr_read_data_r0(dpm,
389 T32_FMTITR(ARMV4_5_MRC(15, 0, 0, 2, 0, 2)),
391 if (retval != ERROR_OK)
394 LOG_DEBUG("ttbcr %" PRIx32, ttbcr);
396 ttbcr_n = ttbcr & 0x7;
397 armv8->armv8_mmu.ttbcr = ttbcr;
400 * ARM Architecture Reference Manual (ARMv7-A and ARMv7-Redition),
401 * document # ARM DDI 0406C
403 armv8->armv8_mmu.ttbr_range[0] = 0xffffffff >> ttbcr_n;
404 armv8->armv8_mmu.ttbr_range[1] = 0xffffffff;
405 armv8->armv8_mmu.ttbr_mask[0] = 0xffffffff << (14 - ttbcr_n);
406 armv8->armv8_mmu.ttbr_mask[1] = 0xffffffff << 14;
408 LOG_DEBUG("ttbr1 %s, ttbr0_mask %" PRIx32 " ttbr1_mask %" PRIx32,
409 (ttbcr_n != 0) ? "used" : "not used",
410 armv8->armv8_mmu.ttbr_mask[0],
411 armv8->armv8_mmu.ttbr_mask[1]);
418 static __unused int armv8_read_ttbcr(struct target *target)
420 struct armv8_common *armv8 = target_to_armv8(target);
421 struct arm_dpm *dpm = armv8->arm.dpm;
422 struct arm *arm = &armv8->arm;
426 int retval = dpm->prepare(dpm);
427 if (retval != ERROR_OK)
430 /* claaer ttrr1_used and ttbr0_mask */
431 memset(&armv8->armv8_mmu.ttbr1_used, 0, sizeof(armv8->armv8_mmu.ttbr1_used));
432 memset(&armv8->armv8_mmu.ttbr0_mask, 0, sizeof(armv8->armv8_mmu.ttbr0_mask));
434 switch (arm->core_mode) {
437 retval = dpm->instr_read_data_r0(dpm,
438 ARMV8_MRS(SYSTEM_TCR_EL3, 0),
440 retval += dpm->instr_read_data_r0_64(dpm,
441 ARMV8_MRS(SYSTEM_TTBR0_EL3, 0),
443 if (retval != ERROR_OK)
445 armv8->va_size = 64 - (ttbcr & 0x3F);
446 armv8->pa_size = armv8_pa_size((ttbcr >> 16) & 7);
447 armv8->page_size = (ttbcr >> 14) & 3;
451 retval = dpm->instr_read_data_r0(dpm,
452 ARMV8_MRS(SYSTEM_TCR_EL2, 0),
454 retval += dpm->instr_read_data_r0_64(dpm,
455 ARMV8_MRS(SYSTEM_TTBR0_EL2, 0),
457 if (retval != ERROR_OK)
459 armv8->va_size = 64 - (ttbcr & 0x3F);
460 armv8->pa_size = armv8_pa_size((ttbcr >> 16) & 7);
461 armv8->page_size = (ttbcr >> 14) & 3;
466 retval = dpm->instr_read_data_r0_64(dpm,
467 ARMV8_MRS(SYSTEM_TCR_EL1, 0),
469 armv8->va_size = 64 - (ttbcr_64 & 0x3F);
470 armv8->pa_size = armv8_pa_size((ttbcr_64 >> 32) & 7);
471 armv8->page_size = (ttbcr_64 >> 14) & 3;
472 armv8->armv8_mmu.ttbr1_used = (((ttbcr_64 >> 16) & 0x3F) != 0) ? 1 : 0;
473 armv8->armv8_mmu.ttbr0_mask = 0x0000FFFFFFFFFFFF;
474 retval += dpm->instr_read_data_r0_64(dpm,
475 ARMV8_MRS(SYSTEM_TTBR0_EL1 | (armv8->armv8_mmu.ttbr1_used), 0),
477 if (retval != ERROR_OK)
481 LOG_ERROR("unknow core state");
485 if (retval != ERROR_OK)
488 if (armv8->armv8_mmu.ttbr1_used == 1)
489 LOG_INFO("TTBR0 access above %" PRIx64, (uint64_t)(armv8->armv8_mmu.ttbr0_mask));
496 /* method adapted to cortex A : reused arm v4 v5 method*/
497 int armv8_mmu_translate_va(struct target *target, target_addr_t va, target_addr_t *val)
502 /* V8 method VA TO PA */
503 int armv8_mmu_translate_va_pa(struct target *target, target_addr_t va,
504 target_addr_t *val, int meminfo)
506 struct armv8_common *armv8 = target_to_armv8(target);
507 struct arm *arm = target_to_arm(target);
508 struct arm_dpm *dpm = &armv8->dpm;
513 static const char * const shared_name[] = {
514 "Non-", "UNDEFINED ", "Outer ", "Inner "
517 static const char * const secure_name[] = {
518 "Secure", "Not Secure"
521 retval = dpm->prepare(dpm);
522 if (retval != ERROR_OK)
525 switch (armv8_curel_from_core_mode(arm)) {
526 case SYSTEM_CUREL_EL0:
527 instr = ARMV8_SYS(SYSTEM_ATS12E0R, 0);
528 /* can only execute instruction at EL2 */
529 dpmv8_modeswitch(dpm, ARMV8_64_EL2T);
531 case SYSTEM_CUREL_EL1:
532 instr = ARMV8_SYS(SYSTEM_ATS12E1R, 0);
533 /* can only execute instruction at EL2 */
534 dpmv8_modeswitch(dpm, ARMV8_64_EL2T);
536 case SYSTEM_CUREL_EL2:
537 instr = ARMV8_SYS(SYSTEM_ATS1E2R, 0);
539 case SYSTEM_CUREL_EL3:
540 instr = ARMV8_SYS(SYSTEM_ATS1E3R, 0);
547 /* write VA to R0 and execute translation instruction */
548 retval = dpm->instr_write_data_r0_64(dpm, instr, (uint64_t)va);
549 /* read result from PAR_EL1 */
550 if (retval == ERROR_OK)
551 retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_PAR_EL1, 0), &par);
555 /* switch back to saved PE mode */
556 dpmv8_modeswitch(dpm, ARM_MODE_ANY);
558 if (retval != ERROR_OK)
562 LOG_ERROR("Address translation failed at stage %i, FST=%x, PTW=%i",
563 ((int)(par >> 9) & 1)+1, (int)(par >> 1) & 0x3f, (int)(par >> 8) & 1);
568 *val = (par & 0xFFFFFFFFF000UL) | (va & 0xFFF);
570 int SH = (par >> 7) & 3;
571 int NS = (par >> 9) & 1;
572 int ATTR = (par >> 56) & 0xFF;
574 char *memtype = (ATTR & 0xF0) == 0 ? "Device Memory" : "Normal Memory";
576 LOG_USER("%sshareable, %s",
577 shared_name[SH], secure_name[NS]);
578 LOG_USER("%s", memtype);
585 int armv8_handle_cache_info_command(struct command_context *cmd_ctx,
586 struct armv8_cache_common *armv8_cache)
588 if (armv8_cache->info == -1) {
589 command_print(cmd_ctx, "cache not yet identified");
593 if (armv8_cache->display_cache_info)
594 armv8_cache->display_cache_info(cmd_ctx, armv8_cache);
598 int armv8_init_arch_info(struct target *target, struct armv8_common *armv8)
600 struct arm *arm = &armv8->arm;
601 arm->arch_info = armv8;
602 target->arch_info = &armv8->arm;
603 /* target is useful in all function arm v4 5 compatible */
604 armv8->arm.target = target;
605 armv8->arm.common_magic = ARM_COMMON_MAGIC;
606 armv8->common_magic = ARMV8_COMMON_MAGIC;
608 arm->read_core_reg = armv8_read_core_reg;
610 arm->write_core_reg = armv8_write_core_reg;
613 armv8->armv8_mmu.armv8_cache.l2_cache = NULL;
614 armv8->armv8_mmu.armv8_cache.info = -1;
615 armv8->armv8_mmu.armv8_cache.flush_all_data_cache = NULL;
616 armv8->armv8_mmu.armv8_cache.display_cache_info = NULL;
620 int armv8_aarch64_state(struct target *target)
622 struct arm *arm = target_to_arm(target);
624 if (arm->common_magic != ARM_COMMON_MAGIC) {
625 LOG_ERROR("BUG: called for a non-ARM target");
629 LOG_USER("target halted in %s state due to %s, current mode: %s\n"
630 "cpsr: 0x%8.8" PRIx32 " pc: 0x%" PRIx64 "%s",
631 armv8_state_strings[arm->core_state],
632 debug_reason_name(target),
633 armv8_mode_name(arm->core_mode),
634 buf_get_u32(arm->cpsr->value, 0, 32),
635 buf_get_u64(arm->pc->value, 0, 64),
636 arm->is_semihosting ? ", semihosting" : "");
641 int armv8_arch_state(struct target *target)
643 static const char * const state[] = {
644 "disabled", "enabled"
647 struct armv8_common *armv8 = target_to_armv8(target);
648 struct arm *arm = &armv8->arm;
650 if (armv8->common_magic != ARMV8_COMMON_MAGIC) {
651 LOG_ERROR("BUG: called for a non-Armv8 target");
652 return ERROR_COMMAND_SYNTAX_ERROR;
655 if (arm->core_state == ARM_STATE_AARCH64)
656 armv8_aarch64_state(target);
658 arm_arch_state(target);
660 LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s",
661 state[armv8->armv8_mmu.mmu_enabled],
662 state[armv8->armv8_mmu.armv8_cache.d_u_cache_enabled],
663 state[armv8->armv8_mmu.armv8_cache.i_cache_enabled]);
665 if (arm->core_mode == ARM_MODE_ABT)
666 armv8_show_fault_registers(target);
668 if (target->debug_reason == DBG_REASON_WATCHPOINT)
669 LOG_USER("Watchpoint triggered at PC %#08x",
670 (unsigned) armv8->dpm.wp_pc);
675 static const struct {
683 { ARMV8_R0, "x0", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
684 { ARMV8_R1, "x1", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
685 { ARMV8_R2, "x2", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
686 { ARMV8_R3, "x3", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
687 { ARMV8_R4, "x4", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
688 { ARMV8_R5, "x5", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
689 { ARMV8_R6, "x6", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
690 { ARMV8_R7, "x7", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
691 { ARMV8_R8, "x8", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
692 { ARMV8_R9, "x9", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
693 { ARMV8_R10, "x10", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
694 { ARMV8_R11, "x11", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
695 { ARMV8_R12, "x12", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
696 { ARMV8_R13, "x13", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
697 { ARMV8_R14, "x14", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
698 { ARMV8_R15, "x15", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
699 { ARMV8_R16, "x16", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
700 { ARMV8_R17, "x17", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
701 { ARMV8_R18, "x18", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
702 { ARMV8_R19, "x19", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
703 { ARMV8_R20, "x20", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
704 { ARMV8_R21, "x21", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
705 { ARMV8_R22, "x22", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
706 { ARMV8_R23, "x23", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
707 { ARMV8_R24, "x24", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
708 { ARMV8_R25, "x25", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
709 { ARMV8_R26, "x26", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
710 { ARMV8_R27, "x27", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
711 { ARMV8_R28, "x28", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
712 { ARMV8_R29, "x29", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
713 { ARMV8_R30, "x30", 64, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core" },
715 { ARMV8_R31, "sp", 64, REG_TYPE_DATA_PTR, "general", "org.gnu.gdb.aarch64.core" },
716 { ARMV8_PC, "pc", 64, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.aarch64.core" },
718 { ARMV8_xPSR, "CPSR", 32, REG_TYPE_UINT32, "general", "org.gnu.gdb.aarch64.core" },
721 #define ARMV8_NUM_REGS ARRAY_SIZE(armv8_regs)
724 static int armv8_get_core_reg(struct reg *reg)
727 struct arm_reg *armv8_reg = reg->arch_info;
728 struct target *target = armv8_reg->target;
729 struct arm *arm = target_to_arm(target);
731 if (target->state != TARGET_HALTED)
732 return ERROR_TARGET_NOT_HALTED;
734 retval = arm->read_core_reg(target, reg, armv8_reg->num, arm->core_mode);
739 static int armv8_set_core_reg(struct reg *reg, uint8_t *buf)
741 struct arm_reg *armv8_reg = reg->arch_info;
742 struct target *target = armv8_reg->target;
743 struct arm *arm = target_to_arm(target);
744 uint64_t value = buf_get_u64(buf, 0, 64);
746 if (target->state != TARGET_HALTED)
747 return ERROR_TARGET_NOT_HALTED;
749 if (reg == arm->cpsr) {
750 armv8_set_cpsr(arm, (uint32_t)value);
752 buf_set_u64(reg->value, 0, 64, value);
761 static const struct reg_arch_type armv8_reg_type = {
762 .get = armv8_get_core_reg,
763 .set = armv8_set_core_reg,
766 /** Builds cache of architecturally defined registers. */
767 struct reg_cache *armv8_build_reg_cache(struct target *target)
769 struct armv8_common *armv8 = target_to_armv8(target);
770 struct arm *arm = &armv8->arm;
771 int num_regs = ARMV8_NUM_REGS;
772 struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
773 struct reg_cache *cache = malloc(sizeof(struct reg_cache));
774 struct reg *reg_list = calloc(num_regs, sizeof(struct reg));
775 struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg));
776 struct reg_feature *feature;
779 /* Build the process context cache */
780 cache->name = "arm v8 registers";
782 cache->reg_list = reg_list;
783 cache->num_regs = num_regs;
786 for (i = 0; i < num_regs; i++) {
787 arch_info[i].num = armv8_regs[i].id;
788 arch_info[i].target = target;
789 arch_info[i].arm = arm;
791 reg_list[i].name = armv8_regs[i].name;
792 reg_list[i].size = armv8_regs[i].bits;
793 reg_list[i].value = calloc(1, 8);
794 reg_list[i].dirty = 0;
795 reg_list[i].valid = 0;
796 reg_list[i].type = &armv8_reg_type;
797 reg_list[i].arch_info = &arch_info[i];
799 reg_list[i].group = armv8_regs[i].group;
800 reg_list[i].number = i;
801 reg_list[i].exist = true;
802 reg_list[i].caller_save = true; /* gdb defaults to true */
804 feature = calloc(1, sizeof(struct reg_feature));
806 feature->name = armv8_regs[i].feature;
807 reg_list[i].feature = feature;
809 LOG_ERROR("unable to allocate feature list");
811 reg_list[i].reg_data_type = calloc(1, sizeof(struct reg_data_type));
812 if (reg_list[i].reg_data_type)
813 reg_list[i].reg_data_type->type = armv8_regs[i].type;
815 LOG_ERROR("unable to allocate reg type list");
818 arm->cpsr = reg_list + ARMV8_xPSR;
819 arm->pc = reg_list + ARMV8_PC;
820 arm->core_cache = cache;
825 struct reg *armv8_reg_current(struct arm *arm, unsigned regnum)
829 if (regnum > (ARMV8_LAST_REG - 1))
832 r = arm->core_cache->reg_list + regnum;
836 const struct command_registration armv8_command_handlers[] = {
838 .chain = dap_command_handlers,
840 COMMAND_REGISTRATION_DONE
844 int armv8_get_gdb_reg_list(struct target *target,
845 struct reg **reg_list[], int *reg_list_size,
846 enum target_register_class reg_class)
848 struct arm *arm = target_to_arm(target);
852 case REG_CLASS_GENERAL:
854 *reg_list_size = ARMV8_LAST_REG;
855 *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
857 for (i = 0; i < ARMV8_LAST_REG; i++)
858 (*reg_list)[i] = armv8_reg_current(arm, i);
863 LOG_ERROR("not a valid register class type in query.");